quimat 3.5 inch touch screen.Application areas: electronic clocks, electric toys, calculators, desk calendars ;? Tablet, electronic dictionary / book, PDA, business communication ;? Telephones, mobile phones ;? Household appliances (induction cookers, microwave ovens, air conditioners, disinfection cabinets, etc.) ;? Industry Instrument and equipment operating system; Military command system; Education and training equipment; Security monitoring system; GPS satellite positioning system; Restaurant ordering and reservation system; Medical equipment and registration, diagnosis and treatment system; Financial system Payment, transfer, and service systems; various types of automatic sales systems; various types of public place information inquiry systems. Touch screens capable of handwriting input have developed rapidly at a scale of 10 million units per year in recent years . It is certain that as people have higher and higher requirements for the functions of display products, with the continuous advancement of industrial, medical, teaching, technology, and military modernization, the scope of application of touch screens will surely become wider and wider. The integration, visualization, miniaturization and intensification of the signal input device. At the same time, due to the application of the touch screen, a variety of new products with high scientific and technological content will be on the market one after another. IQTouch K interactive touch screen feature 20-point touch and dual system -- Android 8.0 system and optional OPS Windows 10Pro system. Its 4K UHD resolution facilitates presentations and collaboration. With optional multi-screen casting software, IQClass 6.0 and installation-free IQClass Plus software, IQTouch K Series can help create an interactive and collaborative teaching atmosphere in class.